“Wounded and fleeing, heroes passed you by, while your face remained bright and your lips, smiling.
You surpassed the bounds of courage and understanding, until people claimed that you knew the unseen.
To you belongs the praise for these pearls I pronounce; you are the giver, I the arranger.
Oh, Sword never sheathed, whom none can doubt and from whom there is no refuge.
Blessed are warfare, glory and eminence; blessed are your subjects and all of Islam, for you are safe!”
From the poem "To Sayf Al-Dawla"
Here 'Sword never sheathed' refers to 'Sayf Al-Dawla', whose name is a laqab meaning 'Sword of the Dynasty'. http://samarmedia.tv/en/video/295/al-mutanabi-arabic-poem-with-english/
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Al-Mutanabbi 13
Arabic poet from the Abbasid era 915–965Related quotes

1990s, Speech at Ohio Wesleyan University (1997)

As quoted in "Isis leader Abu Bakr al-Baghdadi resurfaces in audio urging supporters to join terror group", Independent (15 May 2015)
2014, 2015
Source: http://www.independent.co.uk/news/world/middle-east/isis-leader-abu-bakr-al-baghdadi-resurfaces-in-audio-urging-supporters-to-join-terror-group-10251955.html

al-Suyuti, Dur al-Manthur, vol.7, p. 7 ; ibn Jarir al-Tabari, Tafsir al-Tabari, vol.5, p. 16 ; al-Fakhr al-Razi, al-Tafsir, vol.7, p. 406 ; ibn Hajar al-Haythami, al-Sawa'iq al-Muhriqah, p. 102 ; Muhibbuddin al-Tabari, Dhakha‘ir al-Uqba, p. 25 ; al-Shablanji, Nur al-Absar, p. 100.
Sunni Hadith